Spool construction



Nov. 3,1925. 1,560,120

E. $.7TEED s RooL CONSTRUCTION Filed Jan. '12. 1.923 ZShutI-Shut 1INVENTOR; A-Er/ 3,73 4

A TTORNEYS Nov. 3,1925; 1,560,120

E. S. TEED SPOOL CONSTRUCTION Filnd Jan, 12; 1923 2 Shuts- Shut 2INVENTOR. r/ 6. 72 ed.

ATTORNEY-5' Patented Nov. 3, 1925.

nsnr. s. rain), or AKRON, 0x10.

SPOOL CONSTRUCTION.

Application filed. January 12, 1923. Serial No. 612,200.

To all whom itmay concern:

Be it known that I, EARL S. TEED, a' citizen of the United States, and aresident of Akron, county of Summit, and State of Ohio, have invented anew and useful Improvement in Spool Construction, of which the followingis a specification, the principle of the invention being hereinexplained and the best mode in which I have contemplated applying thatprinciple, so as to disti wish it from other inventions. L

he present invention relates to spools and the construction of the sameand more particularly to the construction. of large spools suchas areused in the textile industry for holding the threads or yarns. Inparticular then, the present invention relates to the construction ofsuch spools from rubber or other suitable compounds whereby the breakagemay be kept low even with hard usage and rough handling. Another objectis the construction of the spools from small preformed units whereby theexpense 0 molding and manufacture may be reduced.

To the accom lishment of the foregoing and related en s, said invention,then, consists of the means hereinafter fully described and particularlypointed out in the claims.

The annexed drawing and the following description set forth in detailcertain mechanism embodying the invention, such disclosed meansconstituting, however, but one of various mechanical forms in which theprinciple of the invention may be used.

In said annexed drawing:

Figs. 1, 2, 3, 4, and 5 are central longitudinal sections throu h fivedifferent types of spools and Figs. 6, 8, 9, and 10 are end elevationsof the'forms shown in Figs. 1, 2, 3, 4, and 5 respectively. Fig. 11 is atrajmental section showing on an enlarged sc e 'a portion of the partsshown in Fig. 14 the proportions being slightly altered.

-'. erably In the present type of spoolsit is necessary to provide acylinder which is hollow and two spool ends which must'be securelyattached thereto and the cylinder must be provided with bushings orbearings prefat the ends thereof.

In the form shown in Fig. 1 there is a. cylinder or. tubular member 1which is in-. teriorly threaded, as at 2, at the ends toi receive thespool ends 3 which, as shown, are disks having an inwardly projectinghollow boss 4 exterio-rly threaded at 5 to fit the threaded tube. Inorder to obtain a. tight fit between the. ends and tube the boss isprovided with a plain unthreaded portion 6 at its inner end adapted tosnugly fit the bore of the tube inside of the threads and a similarunthreaded portion 7. is provided v on the boss adjacent the disk, thisportion ending in a curve 8 and the tube is simiportion 9;-

the spoolreadily on the therefrom. The central bosses. of the ends 4form two bearings for the spool when thus in use.

In Fig. which neither the tube nor 'the boss is f threaded and in thisform the boss is pressed into the tubular member and both members havethe curved ends 8 and 10 as in the first form.

Jn both of these forms the ends are pref- 2 a modified form is shown inerably applied with a slight amount of glue,

rubber cement or other adhesive to aid in fastening the parts secureltogether. By

curving the ends of the to e and the boss the depth through the end atthe juncture of theboss is increased to add strength at this point andas the boss has a bearing at each end in the tube at the straightportlons 6 and 7 thus reducing the strain onthe threads in the formshownin Fig. 1. In both of the forms the separate 'parts are kept assmall as possible to reduce the cost of molding and the -compoundisofcourseof such-a character as to be cured or vulcanized or changed byheat and pressure into a hard substance which maintains its sha andhardness under all normal variations in lly' right hand half 15 of thespool is provided with an interiorly threaded inner end 16',

having plain 'unthreaded portions and. 18

at the ends'of the .threads while the left hand half 19 of the spool hasthe tube formed with an exteriorly threaded end with correspondingunthreaded surfaces 20 and 21.

In the,last two forms shown the entire spool comprising tubular memberand ends is molded as a unit and in Fig. 5 the spool 25 has two integralends 26 having bear ings'27 at the ends to correspond with the bossesformed on the separable ends. In the form shown in Fig. 4 the spool 30is formed with the tubular member having a uniform interioraperture andseparate bushings 31 are pressed into the ends of the aperture and areglued or cemented in 7 place.

These present spools when made of corservice requirements and yet arevery strong and stand the hard usage and handling to which the aresubmitted. By the structure of the joint between the tubular member andthe ends the threads do not have to take the strains and yet thematerial through the line between the boss and the spool end ismaintained at its greatest thickness to reduce breakage. The material issuch that the spools do not crack or split and they havesufiicient'elasticity to stand up under careless and rough handling. Theparts are small and easily molded and even in the case ofthe unit typeof construction may easily be made. As the parts are mold cured thesurfaces are smooth and the spools of uniform size and thus no machinework need be done. The compound does not shrink, warp or deteriorateuiider moisture or heat to which it is subjected in use so thatreplacement is kept low.

Other modes of applying the principle of my-invention may be employedinstead of the one explained, change being made as regards the mechanismherein disclosed, provided the means stated by any of the followingclaims or the equivalent of such stated means be employed. thereforeparticularly point out and distinctly claim as my invention 1. In spoolconstruction, the combination of a tubular member-formed of vulcanizedcompound, havinga relatively thin wall, and being interiorly threaded atits ends, and end members of like material provided with hollow bossesthreaded throughout a threaded tubular member ends, said bosses alsobeing provided with anunthreaded smooth portion adapted to fit and bearand end members provided with hollow bosses and having screw threadsovera portion thereof to engage with said threads on said tubular member tohold the ends in place, said bosses having smooth portions adapted tosnugly fit the bore of said tubular. member to obtain bearingtherea'gainst' over areaof said tubular member of full thickness.

3. In spool construction, the combination of a tubular member havinginteriorly threaded ends formed with an outer portion beyond the threadsof a diameter greater than the diameter of the bottom of the threads,and end members of disk shape formed with threaded hollow bosses, thebosses having an unthreaded portion adjacent the disk of a diameter tofit the smooth portion of said tube.

4. In spool construction, the combinationof a tubular member havinginteriorly threaded ends formed with an outer portion beyond the threadsof a diameter greater than the. diameter of the bottom of the threads,and end members of disk shape formed with threaded hollow bosses, thebosses having an unthreaded port-ion adjacent the disk of a diameter tofit the smooth portion of the said tube, said boss having its inner endunthreaded to form a barrel adapted to snugly fit the bore of saidtubular member inwardly of the threaded portion.

5. In spool construction, the combination of a tubular member havinginterior screw threads adjacent its ends, such threads terminatinginwardly of the ends of the tube and leaving smooth portions of greaterdiameter than the bottom of such threads, said smooth portions beingcurved toward the outer edge of'the tubular member, and end memberscomprising disks having inwardly extending hollow bosses, having asmooth portion adjacent the disk and curving 1nto the disk, said bossesbeing threaded to engage the screw threads in said tubular member andterminating in an unthreaded portion adapted to snugly fit the internalbore of said tubular member inwardly of such threads. portlon of theirlength to engage with said.

Signed by me this 16th, day of December, 1922.

EARL S. TEED.

